Mulder, L.J.M.

measurement reliability reproducibility study barore flex sensitivity children heart rate variability heart supine variability variable research sensitivity barore range position difference measure error hrv-lf ficient –retest variation sample dietrich correlation brs variables journal test –retest reliability university groningen effect heart rate coherence change estimate score psychology frequency interval value power normal-to-normal rr intervals hr variables –altman plots subject pinna center hrv-hf measurement error adolescent medicine frequency domain day 2 result maestri calculation hopkin adult netherland function method analysis supine position grant 0.04–0.15 limit trail brs values table rovere 0.07–0.14 center groningen day 1 mulder domain signal brs measurements between-subjects sd between-subject